AirHint found the following cheapest return flights from Washington (IAD) to Stockholm (ARN) in December 2025 (see full year).

Return flights

03 Dec - 07 Dec	Icelandair
10 Dec - 15 Dec	Austrian Airlines
12 Dec - 28 Dec	SWISS
16 Dec - 21 Dec	SWISS
24 Dec - 31 Dec	Icelandair
26 Dec - 02 Jan	Lufthansa
26 Dec - 03 Jan	Lufthansa
21 Dec - 03 Jan	SWISS

Also check the deals for one-way flights from Washington to Stockholm in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Washington to Stockholm in December from $438

Return flights